Thanks for the replies so far. I know about the "lean burn" and I believe that is on the early 1975 1976 Chrysler rigs.I have a '78 that has the normal pollution stuff. It has a bad engine, and ugly corrugated aluminum sides, always chasing leaks... so I am probably going to upgrade to a Lazy Daze or American Clipper. I am looking for a 19'-21' rig max, and prefer rear queen bed layout. So from I gather I might squeeze some more MPG from a non-lean burn 360 over a 440. The other rig I was considering is a later 80's Minnie Winnie or similar, something with fuel injection and a Chev 350 or Ford 3xxx. I guess the FI is a giant leap forward, any one get much better MPG with FI? I drove a Chevy with what I remember to be a P3 chassis or something. It seemed a bit more nimble and lighter than the old Dodge B300. What I am getting at is ( short of an underpowered Toyota "6") what is the best bang for the buck MPG wise in a 20 foot long RV, V8 engine... I have a budget up to 5K ?
